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* libinterimap: new option SSL_ciphersuites to set the TLSv1.3 ciphersuites.Guilhem Moulin2020-12-171
| | | | | Also, clarify that SSL_cipherlist only applies to TLSv1.2 and below. See SSL_CTX_set_cipher_list(3ssl).
* manuals: Clarify that known TLS protocol versions depend on the OpenSSL ↵Guilhem Moulin2020-12-171
| | | | version used.
* test suite: use stock OpenSSL config except for tests/tls-protocols.Guilhem Moulin2020-12-171
| | | | | It's best to use a stock (clean) environment when possible. We only need to test TLS protocol version <1.2 for tests/tls-protocols.
* Remove obsolete Changelog entry.Guilhem Moulin2020-12-131
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* libinterimap: _start_ssl() now fails immediately with OpenSSL <1.1.0.Guilhem Moulin2020-12-131
| | | | | | | It could in principle still work with earlier versions if the new settings SSL_protocol_{min,max} are not used, however it's cumbersome to do individual checks for specific settings, let alone maintain test coverage with multiple OpenSSL versions.
* libinterimap: use default locations for trusted CA certificates when neither ↵Guilhem Moulin2020-12-131
| | | | | | | | | | | CAfile nor CApath are set. In particular, OpenSSL's default locations can be overridden by the SSL_CERT_FILE resp. SSL_CERT_DIR environment variables, see SSL_CTX_load_verify_locations(3ssl). This bumps the minimum OpenSSL version to 1.1.0 (when SSL_verify is used).
* test suite: ensure we haven't started speaking IMAP when the SSL/TLS ↵Guilhem Moulin2020-12-131
| | | | | | handshake is aborted. (Unless STARTTLS is used to upgrade the connection.)
* Make error messages more uniform and consistent.Guilhem Moulin2020-12-131
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* README: suggest ControlPath=$XDG_RUNTIME_DIR/ssh-imap-%C for the SSH transportGuilhem Moulin2020-12-121
| | | | | | | Not a good idea to use a world-writable directory, see ssh_config(5)… Note that variable expansion is only available in OpenSSH 8.4 and later, cf. https://bugzilla.mindrot.org/show_bug.cgi?id=3140 .
* README: use 'restrict' option in authorized_keys(5) snippet.Guilhem Moulin2020-12-121
| | | | | | | | | | | | | This is shorter and more future-proof. Quoting the manual: restrict Enable all restrictions, i.e. disable port, agent and X11 forwarding, as well as disabling PTY allocation and execution of ~/.ssh/rc. If any future restriction capabilities are added to authorized_keys files they will be included in this set. Note that this won't work with Jessie's OpenSSH server.
* typofix, spellingGuilhem Moulin2020-12-121
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* `make release`: also bump libinterimap version and pin it in 'use' declarations.Guilhem Moulin2020-12-111
| | | | | Also, make use the tag doesn't exist, and fail early if we can't detect the version.
* documentation: simplify SSL options in the sample configuration files.Guilhem Moulin2020-12-111
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* libinterimap: deprecate SSL_protocols and introduce SSL_protocol_{min,max}.Guilhem Moulin2020-12-111
| | | | | | | | Using the libssl interface simplifies our protocol black/whitelist greatly; this only allows simple min/max bounds, but holes are arguably not very useful here. Using the new settings bumps the required libssl version to 1.1.0.
* test suite: supply our own OpenSSL configuration file with MinProtocol=None.Guilhem Moulin2020-12-111
| | | | | | | | So we can test TLSv1 as well, not just TLSv1.2 and later. Also, explicitly set ssl_min_protocol=TLSv1 in the Dovecot configuration file (the default as of 2.3.11.3), hence running TLS tests now require Dovecot 2.3 or later.
* test suite: `mv tests/snippets tests/config`Guilhem Moulin2020-12-111
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* libinterimap: use Net::SSLeay::get_version() to get the protocol version string.Guilhem Moulin2020-12-111
| | | | This avoids maintaing our own map.
* libinterimap: make $OPENSSL_VERSION global.Guilhem Moulin2020-12-111
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* libinterimap: remove default SSL_protocols value.Guilhem Moulin2020-12-111
| | | | | | | | Namely, use the system default instead of "!SSLv2 !SSLv3 !TLSv1 !TLSv1.1". As of Debian Buster (OpenSSL 1.1.1) this does not make a difference, however using the system default provides better compatibility with future libssl versions.
* Remove incorrect affirmation from 0.5.4 changelog.Guilhem Moulin2020-12-111
| | | | | The test suite already required OpenSSL ≥1.1.1 as some tests are using TLSv1.3.
* typofixGuilhem Moulin2020-12-111
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* Prepare new release v0.5.4.v0.5.4Guilhem Moulin2020-12-111
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* Prepare new release v0.5.4.Guilhem Moulin2020-12-111
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* rename 'debian' branch to 'debian/latest' for DEP-14 compliance.Guilhem Moulin2020-12-111
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* Makefile: new 'release' target.Guilhem Moulin2020-12-111
| | | | Also, change the tag format from upstream/$VERSION to v$VERSION.
* libinterimap: add support for the TLS SNI (Server Name Indication) extension.Guilhem Moulin2020-12-111
| | | | | | This is controlled by the new 'SSL_hostname' option. The default value of that option is the value of the 'host' option when it is hostname, and the empty string (which disables SNI) when it is an IP literal.
* libinterimap: make SSL_verify check the hostname as well.Guilhem Moulin2020-12-111
| | | | | | | | | | More precisely, ensure that the certificate Subject Alternative Name (SAN) or Subject CommonName (CN) matches the hostname or IP literal specified by the 'host' option. Previously it was only verifying the chain of trust. This bumps the minimum Net::SSLeay version to 1.83 and OpenSSL version 1.0.2.
* libinterimap: factor out hostname/IP parsing.Guilhem Moulin2020-12-111
| | | | | Also, document that enclosing 'host' value in square brackets forces its interpretation as an IP literal (hence skips name resolution).
* test suite: always generate new certificates on `make test`.Guilhem Moulin2020-12-111
| | | | | In addition, sign test certificates with the same root CA. Hence running `make test` now requires OpenSSL 1.1.1 or later.
* libinterimap: show the matching pinned SPKI in --debug mode.Guilhem Moulin2020-12-111
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* documentation: replace example.org with example.net for consistency.Guilhem Moulin2020-12-101
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* Prepare new release.upstream/0.5.3Guilhem Moulin2020-12-091
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* New test with a server offering both RSA+ECDSA certificates.Guilhem Moulin2020-12-091
| | | | | | | | | | | | This requires dovecot-imapd 2.2.31 or later. Certificate generated with: $ openssl genpkey -algorithm EC -pkeyopt ec_paramgen_curve:P-256 -pkeyopt ec_param_enc:named_curve \ -out tests/snippets/dovecot/dovecot.ecdsa.key $ openssl req -x509 -days 3650 -subj "/CN=InterIMAP test suite" \ -key tests/snippets/dovecot/dovecot.ecdsa.key \ -out tests/snippets/dovecot/dovecot.ecdsa.crt
* libinterimap: SSL_fingerprint now supports a space-separate list of digests ↵Guilhem Moulin2020-12-091
| | | | | | | | | to pin. And succeeds if, and only if, the peer certificate SPKI matches one of the pinned digest values. Specifying multiple digest values can key useful in key rollover scenarios and/or when the server supports certificates of different types (for instance RSA+ECDSA).
* test suite: use a RSA certificate rather than ECDSA.Guilhem Moulin2020-12-091
| | | | | | | | | It's arguably the most common use-case. Generated with $ openssl genpkey -algorithm RSA -out tests/snippets/dovecot/dovecot.rsa.key $ openssl req -x509 -days 3650 -subj "/CN=InterIMAP test suite" \ -key tests/snippets/dovecot/dovecot.rsa.key \ -out tests/snippets/dovecot/dovecot.rsa.crt
* libinterimap: 'debug' forces 'null-stderr' = 0.Guilhem Moulin2020-12-081
| | | | | | The standard error is never sent to /dev/null in debug mode. Closes: deb#968392
* Prepare new release.upstream/0.5.2Guilhem Moulin2020-08-031
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* libinterimap: abort on PREAUTH greeting received on plaintext connectionsGuilhem Moulin2020-08-031
| | | | | Set "STARTTLS = NO" to ignore. This is similar to CVE-2020-12398 and CVE-2020-14093.
* libinterimap: Fix response injection vulnerability after STARTTLS.Guilhem Moulin2020-08-031
| | | | For background see https://gitlab.com/muttmua/mutt/-/issues/248 .
* libinterimap: fail when a capability to ENABLE is missing from the server's ↵Guilhem Moulin2020-08-031
| | | | CAPABILITY listing.
* Makefile: remove 'smart' extension from pandoc call to generate manuals.Guilhem Moulin2020-08-031
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* Prepare new release.upstream/0.5.1Guilhem Moulin2020-07-021
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* Makefile: Major refactoring, add install and uninstall targets.Guilhem Moulin2020-07-021
| | | | | | Honor BUILD_DOCDIR and DESTDIR variables. Also, remove the `use lib` statement from our executables.
* pullimap: Also compare RFC 5322 date and envelope information in mailbox ↵Guilhem Moulin2020-07-021
| | | | comparison tests.
* Fix version number.Guilhem Moulin2020-01-291
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* Prepare new release candidate.upstream/0.5-rcGuilhem Moulin2019-12-141
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* pullimap: Fix mangling of data lines starting with a dot.Guilhem Moulin2019-11-181
| | | | | | | Some LMTP servers, Dovecot's in particular, trims leading dots that are not doubled (e.g. “.foo” would become “foo”). In RFC 5322 sec. 4.5.2 explicitly says that when an RFC 5322 line starts with a '.', the character needs to be doubled.
* pullimap: Treat messages with a NIL RFC822 attribute as empty.Guilhem Moulin2019-11-181
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* interimap: Gracefully ignore messages with NIL RFC822 attribute.Guilhem Moulin2019-11-171
| | | | | | Like we do for zero-length messages. Closes: #944812.
* Avoid sending large UID EXPUNGE|FETCH|STORE and APPEND commands.Guilhem Moulin2019-11-131
| | | | | | | | | | | | | | | | | | | | | | UID EXPUNGE|FETCH|STORE commands are now split into multiple (sequential) commands when their set representation exceeds 4096 bytes in size. Without splitting logic set representations could grow arbitrarily large, and exceed the server's maximum command size. This adds roundtrips which could be eliminated by pipelining, but it's unlikely to make any difference in typical synchronization work. While set representations seem to remain small in practice, they might grow significantly if many non-contiguous UIDs were flagged and/or expunged, and later synchronized at once. Furthermore, for MULTIAPPEND-capable servers, the number of messages is limited to 128 per APPEND command (also subject to a combined literal size of 1MiB like before). These numbers are currently not configurable. They're intentionally lower than Dovecot's default maximum command size (64k) in order to avoid a deadlock situation after sending 8k-long commands under COMPRESS=DEFLATE: https://dovecot.org/pipermail/dovecot/2019-November/117522.html .
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